Rotary engine.



' Patented July 4, I899. G. P. B. HUYT.

ROTARY ENGINE.

(Application md July 13 1898.)

(No Model.)

w/r/vsssss I /NVENTO/? A TTOHNE rs UNITED STATES GABRIEL P. B. HOYT,

PATENT OFFICE.

OF NEWV YORK, N. Y.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 628,327, dated July 4,1899.

Application filed July 13, 1898.

To all whmn it may concern; 7 Be it known that I, GABRIEL P. B. HOYT, ofthe city of New York, (J amaica,) in the borough of Queens,in the countyof Queens and State of New York, have invented a new and Improved RotaryEngine, of which the follow ing is a full, clear, and exact.description.

The object of the invention is to providea new and improved packing,more especially designed for use on rotary engines, the packing beingsimple and durable in construction, adaptedto last a long time, and toform a secure joint between the contact parts to prevent leakage of themotive agent or other fluid.

The invention consists of novel features and parts and combinations ofthe same, as will be fully described hereinafter and then pointed out inthe claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional side elevation of a rotary engine having myimprovement applied, the section being taken on the line 1 l. inFig. 2.Fig. 2 is a fragmentary transverse section of the same on the line 2 2in Fig. 1. Fig. 3 is a fragmentary sectional plan viewv of the same onthe line 3 3 in Fig. 1. Fig. 4 is a perspective view of one of thepacking members, and Fig. 5 is a like view of one of the spring-pressedslides for actuating the packing members.

The improved packing illustrated in the drawings'is applied to a rotaryenginehaving a cylinder A and a piston B secured to the maindriving-shaft O, the piston being provided with a piston-head B, againstwhich the motive agent acts to rotate the piston in the cylinder. Thepiston-packing is fitted into-a recess formed between the opposite walls13 and B of the piston-head and between the heads A and A of thecylinder, the piston-packing extending intothe web 13 of the pistonclose to the hub thereof, as will be readily understood by reference toFigs. 1 and 2. The packing comprises packing members E and F in the formof plates for engaging and packing the inner surface of the cylinder A,said packing members being provided at their outer' faces with dovetailsE Serial No. 685,820. (No model.)

and F, respectively, fitted to slide in corres'ponding dovetail groovesformed on the inner faces of the walls B B of the pistonhead B. Thepacking member F is further provided at the inner face and near themiddle thereof with an offset F having a dovetailed groove engaged by adovetail E formed on the inner face of the member E directly oppositethe dovetail E and in alinement therewith and the dovetail F.

Thus the two members E and F are fitted to slide outwardly on the wallsB? and B and are also fitted to slide upon one another.

. In order to move the packing-rings E and F simultaneously outward, Iprovide sets of slides G G. fitted to slide in the bottom of the slotfor the packing'in the piston B, the

sponding inclines of the packing members E and F and force the sameoutward in contact with the inner surface of the cylinder A. The springsH H are held in suitable recesses in the heads A and A of the cylinder,as is plainly illustrated in Fig. 1, a suitable plug being employed forgiving access to each recessan'd the corresponding spring wheneveropposite sides of its offset F with inclines or teeth F F, engagingcorresponding inclines or teeth I 1 formed on the inner edges of thepacking members I I.

Now it is evident that When-the memberF is moved outward by the actionof, the springpressed slides G G then theinclines F and F actsimultaneously on the packing members I I", so that the latter areforced 1n alongitudinal direction away from each other to .pack theinner faces of the heads A A The packing members I I are formed neartheir lower ends with longitudinally-extending ribs 1 fitting intocorresponding guideways G formed on the inner faces of the slides G G.The outer corners of the packing members are preferablybeveled, as isplainly indicated in Fig. 1, to fit on corresponding annular shoulders Aon the heads A A of the cylinder.

The walls B and 13 of the piston-head are formed with openings, asplainly shown in Fig. 2 at a, to allow the motive agent to pressdirectly upon the plates E and F to hold the latter in the outwardpacking position caused by the action of the springs when no pressure ison or when the piston-head passes the ports.

\Vith respect to the terms packing-plates in the claims I desire it tobe understood that these terms are employed in their broader sense asdesignating packing elements or members and not necessarily the platesof the specified form shown in the drawings.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent 1. A rotary engine having a cylinder, a rotarypiston mounted therein and provided with a head contacting with theinner walls of the cylinder, two packing-plates secured to each otherand fitted to slide in the head, two additional packing-plates locatedbetween the two first-named packing members and engaged therewith so asto be spread longitudinally with the axis of the piston, as thefirstnamed packing-plates move transversely to said axis, slides mountedin the head and having inclined surfaces engaging the first-namedpacking-plates, to push the same outward transverse to the axis of thepiston, and means for pushing the slides.

2. In a packing, the combination with the part that carries the same, oftwo pairs of packing members or plates, the first pair being mounted toslide together in one direction and the second pair being mounted toslide transversely to the first pair and oppositely to each other, anoffset formed on one of the first-named packing-plates and havinginclined surfaces engaging the second-named packing-plates, to push thesecond packingplates opposite to each other, the slides en gaging thefirst-named packing-plates,to push the same outwardly, and means formoving the slides.

3. In a packing, the combination with the part that carries the same, oftwo sets of plates,the plates of the first set being mounted to move inone direction and the plates of the as the first set moves, and meansfor pushing the said first set of plates.

4. In a packing, the combination with the part that carries the same, oftwo packingplates having dovetail connection with each other and mountedto slide on the said member, one of the packing-plates having an offsetprovided with inclined surfaces at each side, two additionalpacking-plates respectively engaging the said inclined surface of one ofthe first-named plates, and means for sliding the first-named plates.

5. In a packing, the combination with the part that carries the same, ofa packing-plate mounted to slide outwardly, two additionalpacking-plates mounted to slide transversely to the first plate andoppositely to each other, the packing-plates having inclined engagingsurfaces by which to move the second-named plates upon the movement ofthe first-named plate, and means for sliding the said firstnamed plate.

6. In a packing, the combination with the part that carries the same, ofa packing-plate mounted to slide, a second packing-plate mounted toslide transversely to the first packing-plate, the two plates havingengaging inclined surfaces by which to move the second plate upon themovement of the first plate, and means for sliding the first-namedplate.

7. In a packing, the combination with the part that carries the same, ofa packing-plate mounted to slide, a second packing-plate mounted toslide transversely to the first packing-plate, the two plates havinginclined engaging surfaces by which to move the second plate upon themovement of the first plate, and a slide having an inclined surfaceengaging with the first plate,topush the same.

8. In a rotary engine, the combination of a cylinder, a rotary pistonmounted therein and having a head engaging the inner walls of thecylinder, a packing-plate mounted on the head to slide transversely tothe axis of the piston, a second packing-plate mounted on the head toslide longitudinally with the axis of the piston, a slide mounted on thehead and engaging the firstnamed plate, to move the same outwardly, saidfirst-named plate having an inclined surface bearing against the secondplate,to push the same, and means carried on the piston for moving theslide.

GABRIEL P. B. IIOYT.

Witnesses:

THEO. G. IIOSTER, EVERARD BoL'roN MAnsnALL.

